Introduction………………………………………………………………………………….3 Parameters of the open loop 1DoF torsional system…………………….4 Position Proportional Control plotting data………………………………….6 Parameters of transient responses and their affect by gain Kp……..11 Position Proportional control with velocity feedback plotting data.15 Parameter of transient responses and their affect by gain Kd……….20 Speed Proportional feedback control……………………………………………23 The response of closed loop system…show more content…

The hardware gain on the experiment was Khw=14.928.

The plot with Open loop Step response of the system is shown below:

The angular velocity profile is provided on the plot and includes two intervals with increase and decrease of angular velocity.
Assuming that both intervals of velocity profile are close to linear dependence, the accelerationand deceleration are considered as constants and they can be obtained by measuring the velocity difference divided by the time interval:

and are depicted on the plot as 1307deg, 2.01s and 4.064s respectively. The applied Torque to the disk can be calculated from the input Voltage of the system which is 0.25V.

According to Newton’s second Law of dynamics for acceleration and deceleration, the moment of inertia of the disk with attached two masses, can be derived as:

The time constant τ of the system was determined by drawing a tangent line to the deceleration transient process of the angular velocity at the peak point as τ=3.533s. Therefore, the viscous damping coefficient was also obtained by the equation:

The viscous damping coefficient and the Moment of Inertia were used for all experimental study as the system remained the same.

Position Proportional Control plotting data
The second experimental study of the Laboratory was the position proportional control of a closed loop system. The aim of this experimental study

Alexis Roberson
Ms. Dye
AP Literature
3rd Block
Coping Mechanisms in The Things They Carried
The Things They Carried withstands one of the central themes of soldiers in the war carrying physical and unwanted emotional baggage. Consequently, it is questionable how the soldiers cope with the horrors of war. Throughout the novel it is shown that the soldiers use many mechanisms to manage this emotional baggage. This includes, but is not limited to, storytelling, humor and denial.
Majority of…

mechanical engineer who originated the concept of a programmable computer. Considered a "father of the computer” Babbage is credited with inventing the first mechanical computer that eventually led to more complex designs. Parts of his uncompleted mechanisms are on display in the London Science Museum. In 1991, a perfectly functioning difference engine was constructed from Babbage's original plans
b) Programming
Joseph Jacquard, the son of a silk weaver, was born in Lyon in 1752. He inherited his…

ou've probably heard people talk about "defense mechanisms," or ways that we protect ourselves from things that we don't want to think about or deal with. The term got its start in psychoanalytic therapy, but it has slowly worked its way into everyday language. Think of the last time you referred to someone as being "in denial" or accused someone of "rationalizing." Both of these examples refer to a type of defense mechanism.
In Sigmund Freud's topographical model of personality, the ego is the…

body and its immune system.
Immune System
The body’s defense mechanisms can be split into two groups; non-specific and specific defense mechanisms. Non-specific mechanisms basically are the barriers that keep pathogens from penetrating the body. For example the epithelial membranes that cover the body, the strong acidity of the stomach killing pathogens before they have the opportunity to infect the system; these are just a couple, there are many others. Specific mechanisms help the individual…

a checkered cloth would
be placed on a table, and markers moved around on it according to certain rules, as an aid to
calculating sums of money.
The ancient Greek­designed
Antikythera mechanism
, dating between 150 to 100 BC, is the world's oldest analog
computer.
The
Antikythera mechanism
is believed to be the earliest mechanical analog "computer",
according to
Derek J. de Solla Price
.[6]
It was designed to calculate astronomical positions. It
was discovered in 1901 in the …

A closed circulatory system usually consists of all of the following: pumping organ, veins,
blood, arteries
Many homeostatic mechanisms are regulated by biofeedback systems. When there is a
change in the set point, the net effect of a negative feedback system is to set off mechanisms
that will return the change to steady­state levels.
B cells undergo clonal selection once activated.
Cell­mediated immunity is directed by T cells, which react with antigen­MHC complexes.
The flight m…

Memory is a constructive and dynamic system rather than a passive mechanism for recording external information. Evaluate this claim, making reference to research findings.
In order to evaluate this claim it is necessary to look at some of the research that has been carried out on memory. Most of the relevant research findings support the theory that memory is indeed a constructive and dynamic system but how much of what we store in our memory is down to active and conscious energy and how much…

The defence mechanisms of Projection and transference.
Sigmund Freud first identified the psychological process of transference and projection and brought it into what is now modern day psychotherapy. He noticed that people had strong feelings and fantasies about him that had no basis in reality. Transference has become a more modern concept since Freud. In fact, transference is actually something that happens in life - and not just in psychotherapy.
What is Transference? During transference…

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